plz explain the meaning of metal displacement and nonmetal displacement in consideration of redox reaction?

Asked by MRUGAKSHI DOSHI | 18th Aug, 2010, 12:00: AM

Expert Answer:

When a metal displaces a less reactive metal from its salt solution, it gets oxidized to form a cation,  while the less reactive metal ion from salt solution gets oxidized
For example: Fe + CuSO(aq)  -> Cu + FeSO4 (aq)
Fe--> Fe 2+ + 2 e-
Cu2+  + 2 e--> Cu
Iron ges oxidized to form ferrous ions while copper ions are reduced to form copper metal
While in case of nonmetal displacement reactions the more reactive nonmetal gets reduced to anion  while the negative ions from salt solution gets oxidized to nonmetal atoms
For example:
F2(aq) + 2KI(aq) ® I2(aq) + 2KF(aq)
Fluorine has been reduced to F- ions
while I- ions have been oxidized to Iodine atom

Answered by  | 19th Aug, 2010, 10:26: AM

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